Skins Men's A200 Thermal Long Sleeve Compression Top with Round Neck 83% Nylon, 17% Elastane Imported Fabric contains advanced wicking technology to keep you dry and comfortable Advanced Thermal Compression fabric perfect for all cold weather activities, especially snowsports Engineered Gradient Compression for improved circulation: Perform longer and stronger with less fatigue and reduced post activity soreness Targeted muscle support for reduced fatigue and risk of injury Also available in a mock neck with or without zipper style Fabric contains advanced wicking technology to keep you dry and comfortable